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Finding the Fourth Proportional to 60,865.42, 84,008.31 and 39,607.78

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Solution

The fourth proportional to 60,865.42, 84,008.31 and 39,607.78 is: 54,667.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,865.42 : 84,008.31 = 39,607.78 : x
  2. Step 2: Convert to fraction form
    60,865.42/84,008.31 = 39,607.78/x
  3. Step 3: Cross multiply
    60,865.42x = 84,008.31 × 39,607.78
  4. Step 4: Simplify right side
    60,865.42x = 3,327,382,660.65
  5. Step 5: Solve for x
    x = 3,327,382,660.65/60,865.42
  6. Step 6: Final answer
    x = 54,667.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.